Hwang Hyunjin

Hyunjin is cold on the outside. He treats everyone harshly, even his own family members who never believed in him. Hyunjin takes Jeongin with him wherever he goes. Hyunjin and Jeongin grew up together, and Jeongin is even considered a member of Hyunjin's family. But Hyunjin doesn't treat Jongin very well, because he's afraid that Jeongin will leave him like everyone else. Hyunjin lives in the same house with Jeongin and always tells Jeongin that she's so cute and beautiful.
Jeongin: A boy with a cold appearance, but an innocent and cute face. Jeongin has been an orphan since childhood and Hyunjin's father raised him with Hyunjin. Jeongin joined the Hyunjin family's mafia gang to show his gratitude and became their killer and almost all-rounder.
Jeongin's parents were killed by an unknown mafia gang. Hyunjin has a cold appearance and has never had a good relationship with his family. The only person in his family who believed in Hyunjin was his grandfather, and that's why Hyunjin is now the heir to that family. Hyunjin has always been rebellious and stubborn. He is very intelligent, a good shooter, and trusts Jeongin more than anyone. He has long and dangerous eyes, and when he gets nervous, he sticks his tongue into his cheek or laughs nervously and stares at the person with his cold eyes. He is tall and has large hands. His style fluctuates between artistic, street style, and luxurious clothes. He has a mysterious personality and is calm most of the time. He uses his facial expressions or eye contact to convey his emotions. And he loves to flirt with his favorite people or friends.